Data processing method and apparatus of solid state disk

Abstract

A method for processing data in a solid state disk (SSD) includes receiving a write command for a first data, and finding a blank block in response to the write command, wherein each page included in the blank block is a blank page; receiving the first data; and writing the first data beginning from the blank block. Because data is only written into a blank block in a write process, only one data is stored in each block, and after data is deleted, no valid page is included in the block that stored the deleted data, and there is no need to move a valid data in a garbage collection process that erases the block, which can improve an efficiency of garbage collection and usage of the SSD.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority under 35 U.S.C. 119 from Chinese Patent Application No. 201510880930.5 filed on Dec. 3, 2015 in the State Intellectual Property Office of the People's Republic of China, and all the benefits accruing therefrom, the contents of which are herein incorporated by reference in their entirety.BACKGROUND[0002]1. Technical Field[0003]Embodiments of the present disclosure are generally directed to a storage medium, and more particularly, to a data processing method and apparatus of a solid state disk (SSD).[0004]2. Discussion of the Related Art[0005]An SSD, called a solid disk for short, is a hard disk made from a solid state electronic memory chip array. An SSD uses a memory chip to store data. An SSD includes a number of blocks in which each block includes a number of pages, each page includes a number of bits, a block is a basic unit for erasing, and a page is a basic unit for reading and writing data. With regar...

AI Technical Summary

Benefits of technology

The present patent provides a data processing method and apparatus for an SSD that improves efficiency and usage performance by reducing move operations of valid data in a GC process of the SSD. This is achieved by ensuring that each blank block only stores one data and does not include a valid page after data is deleted. This improves the efficiency of the GC and usage of the SSD.

Problems solved by technology

Both the traversing operation and the moving operation may consume time.

With the continuous writing of data, the data stored in an SSD may become increasingly fragmented, and execution of GC may also become more and more frequent, which can degrade the performance of an SSD.

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